2012-04-13  Tom de Vries  <tom@codesourcery.com>

	* tree-ssa-tail-merge.c (gsi_advance_bw_nondebug_nonlocal): Add
	parameters vuse and vuse_escaped.
	(find_duplicate): Init vuse1, vuse2 and vuse_escaped.  Pass to
	gsi_advance_bw_nondebug_nonlocal.  Return if vuse_escaped and
	vuse1 != vuse2.

From-SVN: r186418